2012-OCT-18
Observers: S. Chung, J. Gerke, D. Berg
Telescope Operator: D. Gonzalez-Huerta
Support Astronomer: Dave Thompson 

Summary:   Closed for ~30min due to clouds in first part of night and for ~30min due to humidity in second part of night.  Programs observed- AZ_z5qso/cfht_02, AZ_z5qso/cfht_03, AZ_z5qso/cfht_dxs2_2, OSU_CSB_SDSSJ004054, OSU_CSB_SDSSJ020356, and Standard stars (BD284211, Feige110, gd71).

Weather:  light cirrus overhead at sunset, moderate clouds nearby.  Light to moderate cirrus for most of night, cleared to light cirrus around 9UT. Humidity spiked at 10:30UT and telescope closed for ~30min. 

UT 02:30 -- Open

STANDARD STAR: BD284211
UT 01:44 -- acqMODS
UT 01:48 -- modsAlign
UT 01:51 -- execMods - seeing - 0.9

AZ_z5qso/cfht_02:
Note: light to moderate cirrus overhead throughout observations
UT 02:21 -- acqMods
UT 02:31 -- target not visible in acq image, running blind offset .acq script
UT 02:38 -- modsAlign
UT 02:42 -- execMods, changed number of images to 3.  seeing - 1.0
UT 02:56 -- seeing - 1.3
UT 03:22 -- seeing - 1.1
UT 03:32 -- losing guide star due to clouds, third exposure reading out

CLOSING due to cloud cover
UT 03:33 -- closing dome

OPENING back up, still moderate clouds overhead

AZ_z5qso/cfht_03:
Note: light to moderate cirrus overhead throughout observations
UT 03:54 -- acqMods
UT 03:57 -- no guide star, problem w/ telescope pointing?
UT 04:07 -- acqMods, no guide star, original guide star was at edge of field. editing OB to try guide star gs#14.
UT 04:13 -- acqMods, we have a guide star
UT 04:18 -- modsAlign, confirmatory image showed star slightly offset in slit. we did a small manual shift, but the new confirmatory image did not work b/c blind offset has already been applied, no pause in script. 
UT 04:26 -- acqMods again
UT 04:31 -- modsAlign 
UT 04:36 -- execMODS.  seeing - 0.8
UT 05:12 -- just started third exposure, but need to abort to fix collimation problem with telescope.  guiding stopped due to lose of collimation (and clouds). 
UT 05:24 -- acqMods
UT 05:27 -- modsAlign
UT 05:31 -- execMods.  seeing - 0.9

AZ_z5qso/cfht_dxs2_2:
Note: light to moderate cirrus overhead throughout observations
UT 05:50 -- acqMods
UT 05:56 -- modsAlign
UT 05:59 -- execMods.  seeing - 1.0
UT 06:30 -- execMods, taking 3 exposures.  seeing - 1.0

STANDARD STAR: Feige110
Note: light to moderate cirrus overhead throughout observations
UT 06:52 -- acqMods 
UT 06:56 -- modsAlign
UT 06:58 -- execMods.  seeing - 1.0

OSU_CSB_SDSSJ004054:
Note: light cirrus overhead throughout observations
UT 07:35 -- acqMods
UT 07:39 -- modsAlign
UT 07:43 --  execMods.  seeing - 0.8

OSU_CSB_SDSSJ020356:
Note: light cirrus overhead throughout observations
UT 08:50 -- acqMods
UT 08:55 -- modsAlign. problem confirming source with finder chart, we had to look up sdss image to confirm. 
UT 09:11 -- execMods.  seeing - 1.0
UT 10:00 -- seeing decreasing to ~ 2.0 

STANDARD STAR: gd71
Note:  NOT OBSERVED till later
UT 10:20 -- acqMods
UT 10:25 -- trouble collimating b/c seeing is bad
UT 10:26 -- collimated, redoing acqmods to get proper images
UT 10:31 -- modsAlign
UT 10:34 -- execMods. rapid humidity increase, seeing - 2.0
UT 10:37 -- Aborting observation b/c closing scope

CLOSING due to humidity/dewpoint 
UT 10:37 -- closing dome. 

OPENING humidity dropped
UT 10:56 -- opening dome. 

STANDARD STAR: gd71
Note:  
UT 11:04 -- acqMods
UT 11:07 -- modsAlign
UT 11:09 -- execMods, seeing - 1.3